Modified Direct Torque Control of Five-Phase Permanent Magnet Synchronous Motor Drives

Modified switching‐table strategy for reduction of current harmonics in direct torque controlled dual‐three‐phase permanent magnet synchronous machine drives

“…Hatua and Ranganathan [8] develops two new methods of ST-DTC technique, called resultant flux control method and individual flux control method, for the dual-three-phase machine drive to reduce the torque ripple; however, the unexpected stator harmonic currents still exist. Harmonic suppression schemes have been dedicated for the ST-DTC of five-phase machines [9][10][11].…”

PI tuning of five-phase drives with third harmonic injection

“…The VTHI scheme, as well as the constant third harmonic injection (CTHI) one (Duran et al, 2008), is based on PI controllers for the speed loop. This is the standard control scheme in five-phase drives with field oriented control (FOC) and direct torque control (DTC) (Gao & Parsa, 2007;Levi, Jones, Vukosavic, Iqbal, & Toliyat, 2007a;Vukosavic, Jones, Levi, & Dujic, 2008;Zheng et al, 2008).…”

“…Electrical and hybrid vehicles (Gao & Parsa, 2007), aerospace (Levi et al, 2007b), ship propulsion (Parsa & Toliyat, 2005b) and wind power applications (Vizireanu et al, 2007) are examples where the use of multi-phase drives can be advantageous. Among multi-phase drives, five-phase ones provide not only power splitting reduced vibrations and less acoustic noise, but also allows the use of a third harmonic injection (THI) together with the fundamental component.…”

Direct Torque Control of Multiphase Doubly Converter-fed Asynchronous Machines Incorporating the Harmonic Torques

“…As to muti-phase PMSM, they are, from the mathematical viewpoint and the control complexity, much simpler (no rotor windings) than IM. However, even in these cases, the DTC of the machine, to the best of the authors' knowledge, has also always been developed (with the exception of the results claimed in [11]), making use only of the fundamental torque [12][13][14][15][16]. As to the DTC of multiphase DCFAM, it has not been dealt with yet in the technical literature, not even in the simpler case of only fundamental wave operation.…”

“…A switching-table based inverter operation strategy, initially introduced for three phase inverters [24], overcomes these drawbacks. In the case of multi-phase VSIs, this strategy has been first developed for inverters feeding 5-phase machines [8,12,13,25]) and dual-three-phase machines [14,16]. In a later and valuable paper [26], the switching-table based inverter operation strategy was extended to multiphase VSIs with an arbitrary odd number of phases, resorting to the so called virtual vectors definition methodology.…”